Develop Reference

A pip subprocess error when I create an environment for one project in its root folder

Running Ubuntu 18.04 LTS as WSL2 on Win10, I need to create an environment to install Devito on my system. So, in a root folder of this project I do:
(base) quant#NB-W-I-NIKONENKO:~/devito$ conda env create -f environment-dev.yml
and get this:
Collecting package metadata (repodata.json): done
Solving environment: done
Preparing transaction: done
Verifying transaction: done
Executing transaction: done
Installing pip dependencies: \ Ran pip subprocess with arguments:
['/home/quant/anaconda3/envs/devito/bin/python', '-m', 'pip', 'install', '-U', '-r', '/home/quant/devito/condaenv.r9s6c4x4.requirements.txt']
Pip subprocess output:
Requirement already satisfied: pip>=9.0.1 in /home/quant/anaconda3/envs/devito/lib/python3.9/site-packages (from -r /home/quant/devito/requirements.txt (line 1)) (21.2.4)
Pip subprocess error:
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f27c959d970>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/pip/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f27c959d5b0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/pip/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f27c959df10>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/pip/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f27c95c5100>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/pip/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f27c95c52b0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/pip/
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f27c8f2bc10>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/numpy/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f27c8f2be20>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/numpy/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f27c8f32040>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/numpy/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f27c8f321c0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/numpy/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f27c8f32370>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/numpy/
ERROR: Could not find a version that satisfies the requirement numpy>1.16 (from versions: none)
ERROR: No matching distribution found for numpy>1.16
failed
CondaEnvException: Pip failed
The next installation commands should be:
source activate devito
which works, and the next:
pip install -e .
which shows the following:
Obtaining file:///home/quant/devito
Requirement already satisfied: pip>=9.0.1 in /home/quant/anaconda3/envs/devito/lib/python3.9/site-packages (from devito==4.6.2+60.g9b765d0d6) (21.2.4)
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7fa7509e1040>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/numpy/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7fa750a4d9d0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/numpy/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7fa750a4d880>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/numpy/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7fa750a4d190>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/numpy/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7fa750a4dca0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/numpy/
ERROR: Could not find a version that satisfies the requirement numpy>1.16 (from devito) (from versions: none)
ERROR: No matching distribution found for numpy>1.16
So, I can not install the package correctly and implement the final command:
conda update - all –yes
I noticed that base Python version is 3.7.6 and after the source activation python version is 3.9.7 (I am not sure if it helps but I really struggled with this problem).
Here is the link for installation instructions for the Devito
https://medium.com/#soulfoodpst/install-devito-on-windows-a-tool-for-automatic-programming-3def3949e5c8

Fix " Could not find a version that satisfies the requirement boto3 (from versions: ) No matching distribution found for boto3"

I'm struggling installing installing Boto3 library.
Python version: 3.6.12
pip version 9.0.1
Server: Redhat 7.9 (Maipo) , Fedora.
I tried different comibnation to get the boto3 library:
pip3 install boto3
pip3 install boto
pip3 install --extra-index-url https://pypi.python.org/simple boto3
but always I have the same error.
Any idea?
My code:
sla82716:/home/pa009999/scriptDirectory $ pip3 install boto
Collecting boto
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8fb0f74e10>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto/
Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8fb0f74208>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto/
Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8fb0f742b0>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto/
Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8fb0f74320>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto/
Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8fb0f743c8>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto/
Could not find a version that satisfies the requirement boto (from versions: )
No matching distribution found for boto
sla82716:/home/pa009999/scriptDirectory $ pip3 install boto3
Collecting boto3
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f08a5642f98>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto3/
Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f08a5642438>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto3/
Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f08a5642400>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto3/
Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f08a56420b8>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto3/
Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f08a5642630>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto3/
Could not find a version that satisfies the requirement boto3 (from versions: )
No matching distribution found for boto3
sla82716:/home/pa009999/scriptDirectory $ pip3 install --extra-index-url https://pypi.python.org/simple boto3
Collecting boto3
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f5456b85358>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto3/
Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f5456b85828>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto3/
Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f5456b85898>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto3/
Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f5456b85ef0>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto3/
Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f5456b85198>: Failed to establish a new connection: [Errno -2] Name or service not known',)': /simple/boto3/
Could not find a version that satisfies the requirement boto3 (from versions: )
No matching distribution found for boto3

It looks like you cannot resolve the hostname. Try adding the following line (Google nameserver)
nameserver 8.8.8.8
to the /etc/resolv.conf file (e.g., by using nano /etc/resolv.conf). You can only add three nameservers, so you might have to delete/change one line if there are already three nameservers in the file.
Afterwards, ping google.com should work and pip install boto3 as well.

Install packages (pywin32, win10toast and many others) via pip install not possible

I have installed python 3.8, and need to install pywin (pywin32)
However, pip cannot find it. Note, i have tried to install some other packages with pip install command in terminal before, but those don't work either.
A few possibly relevant data points:
new install of python 3.8.1
windows 10 x64
python 3.7 was previously installed on the machine
I'm using pycharm 2019.3.3. There in venv/Lib/site-packages it shows that setuptools and pip is installed.
I use the terminal in pycharm, since however it's the only console which let's me go to the path system C: ---> the normal cmd of windows is always on M:, even if I change directory, it always goes back to M: (I don't know why)....
What I tried:
*cmd -> netsh winhttp show proxy #As I thought the installation problems might relate to the proxy. But it doesn't because at work we don't use one, it's DirectAccess (no proxy).
*to install pywin32; Errorcode:
Collecting pywin32
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object
at 0x000002189212F3A0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pywin32/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object
at 0x000002189212FE20>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pywin32/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object
at 0x0000021892150880>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pywin32/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object
at 0x0000021892150AC0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pywin32/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object
at 0x00000218921507C0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pywin32/
Could not find a version that satisfies the requirement pywin32 (from versions: )
No matching distribution found for pywin32
*to install pypiwin32; Errorcode:
Collecting pypiwin32
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object
at 0x000002670BE9FFA0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pypiwin32/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object
at 0x000002670BE9FCD0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pypiwin32/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object
at 0x000002670BEC08B0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pypiwin32/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object
at 0x000002670BEC0AF0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pypiwin32/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object
at 0x000002670BEC07F0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pypiwin32/
Could not find a version that satisfies the requirement pypiwin32 (from versions: )
No matching distribution found for pypiwin32
Can you help me please?
Also, if there is already one topic which is helpful, I would be happy about it. I wasted hours of searching this website, but there's too much...
How did I get to this issue:
I want to write a code with popup notification for the Windows taskbar. Therefore want to use win10toast but pip cannot install - I checked the requirements and it's necessary to install pywin32 and setuptools first. So setuptools was pre-installed, therefore ok.
But pywin32 installation is not possible.
If you could offer me a better solution than win10toast this would also be helpful ;-)
A million thanks! Wish you a happy day :)

You could use plyer instead of win10toast just install it And write
From plyer import notification
a= Notification.notify(title= ,message=,icon=,time=)

Issues when pip install libraries in my host machine

I am trying to use pip (9.0.1) in my macosx (python 2.7.10) but whenever I install something I keep getting these errors:
Collecting flask
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa310>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa110>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa550>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa850>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8facd0>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Some guy mentioned that might be related to the firewall so I connected to the network via my phone and then I execute pip in this case things seem to get installed but I still get all this "retrying" before it downloads every package like:
Collecting flask
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa310>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa110>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa550>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa850>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8facd0>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Downloading Flask-0.12.2-py2.py3-none-any.whl (83kB)
100% |████████████████████████████████| 92kB 1.8MB/s
Collecting itsdangerous>=0.21 (from flask)
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by '
Any idea why I get these messages?

pip has proxy option. Please use it.
pip install flask --proxy=<proxy address>
From pip --help
--proxy Specify a proxy in the form [user:passwd#]proxy.server:port.
Read about proxy address here.
Refer this to setup proxy on mac os.

Getting error while installing autocorrect in python 3.6 (Windows)

I need to use autocorrect package in my project to correct the misspelled words.
for example:
from autocorrect import spell
spell('gruop')
But while trying to install autocorrect in python 3.6 as mentioned in https://github.com/phatpiglet/autocorrect. Am getting error as shown below:
(py36) C:\Users\Shylashree\Documents>pip install autocorrect
Collecting autocorrect
Cache entry deserialization failed, entry ignored
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001DD1747C3C8>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',)': /simple/autocorrect/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001DD1747CBE0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',)': /simple/autocorrect/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001DD1747CD30>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',)': /simple/autocorrect/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001DD1747C6A0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',)': /simple/autocorrect/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001DD1747C7B8>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',)': /simple/autocorrect/
Could not find a version that satisfies the requirement autocorrect (from versions: )
No matching distribution found for autocorrect
Can anyone please tell me that how to sort out this error? and also suggest me is any other packages there to correct the misspelled words in python 3.6?